I can't get over how good this chapter was. I keep coming back to it, like a few chapters I remember being captivated by during the Arrancar arc. Yhwach has achieved his goal, absorbed the Soul KIng, mimihagi, Ichigo's own powers he'd spent years growing and expanding through battles, training, and experience, and now Yhwach's darkness is incredible.
With Yhwach's last Auswählen, he retrieved that part of his soul he'd shared with Gerard, the last Sternritter Elite, who'd also grown in strength to become almost as powerful as Yhwach himself. Now Yhwach's power is nearly doubled again. The Sternritter were just vessels and when they'd developed their powers to their limits, Yhwach took back his soul fragment and stripped them of not just power, but life. It's such an interesting turn on the the paternal god concept of everything being bestowed by, and returning to, the father.